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The thrust fault was discovered in 1999 and runs about 40 km (25 mi) in three discrete sections from the Puente Hills region in the southeast to just south of Griffith Park in the northwest. The fault is known as a blind thrust fault, as the fault plane does not extend to the surface. Large earthquakes on the fault are relatively infrequent but ...
The Puente Hills thrust fault system is in a broad zone directly underneath the densest parts of the L.A. area, including downtown Los Angeles, which has many old and unretrofitted buildings, as ...
The Puente Hills thrust fault is the same overall fault network that produced the Whittier Narrows – which measured a 5.9 magnitude, killed eight people and caused some $358 million in damage in ...
A blind thrust earthquake along the Puente Hills fault could contribute more to urban seismic risk than the 'big ones' of magnitude 8 or more. [6] Bajo Segura Fault Zone, Spain; Fukaya Fault System, Japan (near Tokyo) Uemachi Fault System, Osaka Basin, Japan; Main Frontal Thrust, Himalaya
The La Habra earthquake was caused by oblique thrust faulting on the Coyote Hills segment of the Puente Hills Thrust Fault System. [1] [3] The Puente Hills Fault is a blind thrust fault that runs north and west from Orange County to Los Angeles. It was the fault that was responsible for the 5.9 M w 1987 Whittier Narrows earthquake on October 1 ...
A magnitude 7.5 quake in the Puente Hills thrust fault system — which runs under highly populated areas of L.A. and Orange counties — could kill 3,000 to 18,000 people, according to the U.S ...
Beginning with the 1983 Coalinga earthquake, a blind thrust event in the central coast ranges of California, a change in perspective was brought about regarding these types of (concealed) faults. The October 1987 shock occurred on a previously unrecognized blind thrust fault that is now known as the Puente Hills thrust system.
Port Hills Fault: South Island, New Zealand: Oblique-thrust: Active: 2011 Christchurch (M6.3) Puente Hills Thrust: 40: San Gabriel Valley, United States: Blind thrust: Active: 1987 Whittier Narrows (M5.9) Queen Charlotte-Fairweather Fault: 800: Canada and Alaska: Dextral: Active: 1949 Graham Island (M8.1), 1958 Lituya Bay (M7.8), 2012 Haida ...